Impact

You don't have to be an emerging actor to want to break out from the pack this year. Here, six guys on the verge of something big show how to mix up looks and labels and tailoring and sportswear to reengineer your style for 2011.

Brandon T. Jackson

Brandon T. Jackson

Age: 26 ("But I look mad young.")

You might remember him from: Tropic Thunder, as the rapper-actor Alpa Chino who keeps a certain black-faced actor in check. He also contributed the instant classic "I Love Tha Pussy" to the film's soundtrack.

You will definitely remember him from: This month's Big Mommas: Like Father, Like Son — yes, seriously — opposite Martin Lawrence. Jackson plays Lawrence's stepson, an aspiring rapper who goes undercover in a performing-arts school... as a girl. (Hey, it worked out okay for Lawrence.)

And for this movie: Jackson has recorded a track with T-Pain. "And for me," Jackson says, "2011 is going to be a big year. An impact year."

Charlie Day

Charlie Day

Age: 34

You might remember him from: It's Always Sunny in Philadelphia, the cult basic-cable show. "I mean, we're the biggest scripted comedy on basic cable, and we're in syndication. But sure, if you want to call it cult, that's fine."

You will definitely remember him from: July's Horrible Bosses, costarring Jason Bateman and SNL's Jason Sudeikis as three guys who wreak havoc on their employers. Day terrorizes Jennifer Aniston.

Role model: Bill Murray. "He's been funny. He's been quirky and serious. I really do enjoy comedic roles, and then if America permits me, I'll do some more serious roles after that."